Resize ext3 Partition

[Shane Archer]

I have an install of FC3 on an ext3 partition, with an older NTFS partition 
containing an XP install on the same drive.

I am using XP less and less on this particular system, and I need to 
reclaim more space for /var which is on the drive. What program or utility, 
if any, would be capable of non-destructively shrinking the NTFS partition 
while expanding the ext3 partition?

I looked into Partition Magic Pro, but it appears that it does not support 
ext3, as their site claims only ext2 and swap:
http://sea.symantec.com/content/product.cfm?productid=1

Has anybody used anything else successfully in this manner?

Thanks,

Shane